Dear candidate

There is no eligibility Percentage in graduation for appearing in IAS exam you just need to pass your graduation from a recognized board or those who are writing examination are also eligible to apply and it doesn't matter if you took a gap year or once failed and passed again and all you need is to pass your graduation.

For more Information about the eligibility criteria for IAS exam visit the below mentioned link

https://competition.careers360.com/articles/upsc-ias-eligibility-criteria

Hope this Information is helpful